Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September is characterized by a slight reduction in average high-temperature, easing from a refreshing 57.2°F (14°C) in August to a frosty 48.9°F (9.4°C). Saint Michael's average temperature throughout the nights in September exhibits a minor decrease from daytime highs, stabilizing at a wintry 40.3°F (4.6°C).Humidity
In Saint Michael, the average relative humidity in September is 80%.Rainfall
In Saint Michael, during September, the rain falls for 15.1 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Saint Michael, during the entire year, the rain falls for 118.6 days and collects up to 13.39" (340mm) of precipitation.Snowfall
Months with snowfall in Saint Michael are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 1.4 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, there are 94.3 snowfall days, and 27.2" (691mm) of snow is accumulated.Daylight
In Saint Michael, Alaska, the average length of the day in September is 12h and 56min.On the first day of September, sunrise is at 7:35 am and sunset at 9:59 pm. On the last day of the month, sunrise is at 8:56 am and sunset at 8:19 pm AKDT.
Sunshine
In September, the average sunshine in Saint Michael is 5.3h.UV index
The average daily maximum UV index in September in Saint Michael is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during September leads to these advisories:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. To guard against the harmful effects of the Sun, minimize exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What is the temperature in September in Saint Michael?
What is the average humidity in September in Saint Michael?
How many days does it rain in September in Saint Michael?
When does it start to snow in Saint Michael?
How many hours of daylight does Saint Michael have in September?
When is the sunrise / sunset in September in Saint Michael?
How many hours of sunshine does Saint Michael have in September?
How high is the UV index in September in Saint Michael?
Average temperature in September
Saint Michael, AK
- Average high temperature in September: 48.9°F
The warmest month (with the highest average high temperature) is July (59.5°F).
The month with the lowest average high temperature is January (9.1°F).
- Average low temperature in September: 40.3°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is January (1.8°F).
Average pressure in September
Saint Michael, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is May (29.92"Hg).
The month with the lowest atmospheric pressure is October (29.72"Hg).
Average wind speed in September
Saint Michael, AK
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is October (9.6mph).
The calmest month (with the lowest average wind speed) is June (6mph).
Average humidity in September
Saint Michael, AK
- Average humidity in September: 80%
The month with the highest relative humidity is March (92%).
The month with the lowest relative humidity is June (72%).
Average rainfall in September
Saint Michael, AK
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Saint Michael, AK
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is August (19.8 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in September
Saint Michael, AK
- Average snowfall in September: 0.16"
The month with the highest snowfall is November (4.76").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Saint Michael, AK
- Average snowfall days in September: 1.4 days
The month with the highest number of snowfall days is March (16.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Saint Michael, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 20h and 24min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is May (Average sunshine: 8h and 18min).
The month with the least sunshine is June (Average sunshine: 2h and 54min).
Average sunshine days in September
Saint Michael, AK
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is August (8.4 days).
Average UV index in September
Saint Michael, AK
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in September
Saint Michael, AK
- Average cloud cover in September: 58
The month with the most cloud cover is August (Cloud cover 62).
The month with the least cloud cover is June (Cloud cover 50).
Average visibility in September
Saint Michael, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Saint Michael, Alaska, USA
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